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Processes
Special Issues
Application of Nanomaterials in the Process of Water Electrolysis
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Application of Nanomaterials in the Process of Water Electrolysis

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Chemical Processes and Systems".

Deadline for manuscript submissions: closed (15 January 2023) | Viewed by 6442

Special Issue Editor

Dr. Xin Wang

E-Mail Website
Guest Editor
College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
Interests: electrocatalytic water splitting; electrocatalytic CO2 conversion; lithium-ion battery; super capacitor
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Due to the depletion of fossil energy and the increasingly serious environmental pollution, electrolytic water technology has attracted more and more attention of scientists in recent years. It is very important to develop and expand new electrocatalytic materials and optimize electrocatalytic industrial process. As the key to the performance of electrocatalytic decomposition of water, the regulation of the physical and chemical properties of nano electrocatalytic is very important. Therefore, it is necessary to strengthen the development and find more efficient and long-term catalyst systems. At the same time, in order to meet industrial applications, devices for electrocatalytic decomposition of water also need to be studied, such as membranes with pH universality.

This special issue "Application of Nanomaterials in the Process of Water Electrolysis" aims to find high-quality works, focusing on the materials used for electrolytic water and the latest advanced technology. Topics include but are not limited to:

  • Nanocomposites and their application in electrolytic water;
  • Process and transmission characteristics of electrolytic cell;
  • Study on structure-activity relationship of catalyst;
  • Industrial integration, application and modeling in electrolytic process.

Dr. Xin Wang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • advanced composition
  • regulation of materials
  • structure activity relationship
  • water electrolysis
  • process engineering

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

21 pages, 5281 KiB  
Article
Processes and Interactions Impacting the Stability and Compatibility of Vitamin K and Gold Nanoparticles
by Adriana Samide, Bogdan Tutunaru and Bogdan Oprea
Processes 2022, 10(9), 1805; https://doi.org/10.3390/pr10091805 - 7 Sep 2022
Cited by 3 | Viewed by 2129
Abstract
This study provides evidence on the stability of vitamin K1 (VK) in the form of phytomenadione, in the absence and presence of a therapeutic preparation, as the gold nanoparticles (AuNPs), under the effect of sodium halide ions. The degradation susceptibility of the [...] Read more.
This study provides evidence on the stability of vitamin K1 (VK) in the form of phytomenadione, in the absence and presence of a therapeutic preparation, as the gold nanoparticles (AuNPs), under the effect of sodium halide ions. The degradation susceptibility of the two compounds was assessed individually and in mixtures by cyclic voltammetry and electrolysis at a constant current density assisted by UV-Vis spectrophotometry. Their interactions with the halide ions differently impact on the electrochemical processes as follows: (i) the fluoride ions weakly affects the VK/AuNP stability and compatibility; (ii) the presence of chloride ions leads to VK/AuNP stability, for a short time and restrictive compatibility; (iii) bromide ions induce instability and incompatibility of the VK/AuNP system; (iv) spontaneous interactions between VK/AuNPs and iodide ions take place, consequently defining as an unstable and incompatible system. Full article
(This article belongs to the Special Issue Application of Nanomaterials in the Process of Water Electrolysis)
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12 pages, 3134 KiB  
Article
Chloride-Derived Bimetallic Cu-Fe Nanoparticles for High-Selective Nitrate-to-Ammonia Electrochemical Catalysis
by Zixuan Tang, Zehui Bai, Xin Li, Le Ding, Bin Zhang and Xinghua Chang
Processes 2022, 10(4), 751; https://doi.org/10.3390/pr10040751 - 13 Apr 2022
Cited by 25 | Viewed by 3712
Abstract
Cu-based bimetallic materials have been widely reported as efficient catalysts for electrocatalytic nitrate reduction. However, the faradaic efficiency and selectivity are still far from satisfactory. Herein, Cu-Fe bimetallic nanoalloys with adjustable Cu/Fe ratios are successfully prepared through a reactive mechanical milling approach with [...] Read more.
Cu-based bimetallic materials have been widely reported as efficient catalysts for electrocatalytic nitrate reduction. However, the faradaic efficiency and selectivity are still far from satisfactory. Herein, Cu-Fe bimetallic nanoalloys with adjustable Cu/Fe ratios are successfully prepared through a reactive mechanical milling approach with CuCl2, FeCl3 and Na as the starting materials. The optimized Cu3Fe exhibits excellent nitrate conversion efficiency of 81.1% and 70.3% ammonia selectivity at −0.7 V vs. RHE within 6 h under 0.1 M Na2SO4 and 100 ppm NO3−. The Fe-introduction-induced upshift of the d-band center is identified to be beneficial for promoting nitrate adsorption on Cu3Fe. Moreover, favorable H generation under the assistance of Fe could effectively accelerate the stepwise hydrogenation during electrocatalytic nitrate reduction, resulting in significantly improved NH4+ selectivity. This work supplies valuable insights for the rational design of transition-metal-based bimetallic catalysts for electrocatalytic nitrate reduction. Full article
(This article belongs to the Special Issue Application of Nanomaterials in the Process of Water Electrolysis)
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